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31. 发明专利

JPH01215122A PHASE SYNCHRONIZING SIGNAL GENERATING CIRCUIT 失效
公开(公告)号：JPH01215122A
公开(公告)日：1989-08-29
申请号：JP3945288
申请日：1988-02-24
申请人： HITACHI LTD , HITACHI ELECTRONICS
发明人： IZUMIDA MORIJI , MITA SEIICHI , DOI NOBUKAZU , ISHII HIROTAKE , MURATA NORIO , FUJINO SHIGEAKI
IPC分类号： H03L7/08 , G11B20/14 , H03L7/10 , H03L7/107 , H04L7/02 , H04L7/033
摘要： PURPOSE:To realize the always stable control characteristic by detecting the period and controlling the entire loop gain so as to be constant. CONSTITUTION:A data period detection circuit 7 outputs a control signal 7a inversely proportional to the period of a data to a gain control circuit 6. The gain control circuit 6 uses a control signal 7a so as to control the amplitude of an output voltage 2a of a phase comparator 2 thereby making the gain of phase comparison constant at all times. The output signal 6a of the gain control circuit 6 is given to a loop filter 3 to output a voltage 3a corresponding to a phase error to a voltage controlled oscillator 4. Moreover, the clock pulse generated by the voltage controlled oscillator 4 is fed back to the phase comparator 2 and a data period detection circuit 7. Thus, the loop gain of the PLL circuit (phase synchronizing signal generating circuit) independently of the frequency of an input data and stable control characteristic is realized.

32. 发明专利

JP2015002494A 通信装置、無線通信システム、無線通信方法、および端末审中-公开
标题翻译：通信设备，无线通信系统，无线通信方法和终端
公开(公告)号：JP2015002494A
公开(公告)日：2015-01-05
申请号：JP2013127093
申请日：2013-06-18
申请人：株式会社日立製作所 , Hitachi Ltd
发明人： TAMAKI TAKESHI , ISHII HIROTAKE
IPC分类号： H04W36/30 , H04W36/18
CPC分类号： H04W52/0229 , H04W52/16 , H04W52/242 , H04W52/245 , H04W52/38 , Y02D70/00 , Y02D70/1262 , Y02D70/142 , Y02D70/146
摘要：【課題】二つの無線通信方式を切り替える無線通信システムにおいて、バッテリーの持ちがよく、不安定な通信状況を回避することができる通信装置および無線通信方法を提供する。【解決手段】第一の通信方式における端末の受信強度を測定し、基地局と端末間の伝搬路のロスを計算し、この伝搬路ロスを第二の通信方式で通信した場合に推定し、第二の通信方式の基地局出力と推定伝搬ロスから端末の受信電力を推定する。十分な受信電力、および安定的な受信電力が保証されている場合に、第一の無線方式から第二の無線方式に切り替えることによって、第二の通信方式で安定的な通信を確保する。【選択図】図4
摘要翻译：要解决的问题：提供一种其中电池具有长寿命并且可以避免不稳定的通信情况的通信设备，在两个无线通信系统被切换的无线通信系统中，并提供无线通信方法。解决方案：接收测量第一通信系统中的终端的强度，计算基站与终端之间的传播路径的损失，当由第二通信系统进行通信时估计该传播路径损耗，然后终端的接收功率为从第二通信系统的基站输出估计的传播损耗和估计的传播损耗。当确保足够的接收功率和稳定的接收功率时，通过从第一无线系统切换到第二无线系统来确保第二通信系统的稳定通信。

33. 发明专利

JP2014138292A Radio communication base station and radio communication method 审中-公开
标题翻译：无线电通信基站和无线电通信方法
公开(公告)号：JP2014138292A
公开(公告)日：2014-07-28
申请号：JP2013006189
申请日：2013-01-17
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： HAYASE SHIGENORI , FUJISHIMA KENZABURO , ISHII HIROTAKE , TAIRA MASANORI
IPC分类号： H04W88/08 , H04B7/04 , H04J1/00 , H04J11/00 , H04J99/00 , H04W16/28 , H04W28/04
CPC分类号： H04L69/323 , H04B7/0413 , H04L1/00 , H04L1/0025 , H04L1/1816 , H04L67/1002 , H04L69/321 , Y02D70/1262 , Y02D70/146 , Y02D70/444
摘要： PROBLEM TO BE SOLVED: To appropriately allocate processing to a plurality of baseband signal processing units.SOLUTION: A radio communication base station communicating with a terminal includes: a plurality of baseband signal processing units for performing baseband signal processing; a baseband allocation unit for allocating the baseband signal processing to the plurality of baseband signal processing units; and a linear processing unit for combining signals processed by the plurality of baseband signal processing units with one another. The baseband allocation unit selects from the plurality of baseband signal processing units a baseband signal processing unit to which baseband signal processing for a data block is allocated, for each data block. The plurality of baseband signal processing units perform the allocated baseband signal processing. The linear processing unit combines signals processed by the plurality of baseband signal processing units with one another by linear arithmetic.
摘要翻译：要解决的问题：适当地将处理分配给多个基带信号处理单元。解决方案：与终端通信的无线电通信基站包括：用于执行基带信号处理的多个基带信号处理单元; 基带分配单元，用于将所述基带信号处理分配给所述多个基带信号处理单元; 以及用于将由所述多个基带信号处理单元处理的信号彼此组合的线性处理单元。基带分配单元对于每个数据块从多个基带信号处理单元中选择分配了数据块的基带信号处理的基带信号处理单元。多个基带信号处理单元执行所分配的基带信号处理。线性处理单元通过线性运算将由多个基带信号处理单元处理的信号彼此组合。

34. 发明专利

JP2012147051A Wireless system and wireless communication method 有权
标题翻译：无线系统和无线通信方法
公开(公告)号：JP2012147051A
公开(公告)日：2012-08-02
申请号：JP2011001437
申请日：2011-01-06
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ISHII HIROTAKE , MORINAGA YASUTAKA
IPC分类号： H04W16/16 , H04J11/00 , H04W16/26 , H04W92/20
CPC分类号： H04W72/042 , H04W24/10 , H04W72/005 , H04W72/082 , H04W84/045 , H04W84/047
摘要： PROBLEM TO BE SOLVED: To obtain a high throughput of a relay femto base station with small resources of a donor macro base station, and to avoid interference of a femto cell base station.SOLUTION: A relay femto base station 4 transfers the data of C-Plane exchanged between a core network 7 and a mobile station 6 via a donor macro base station 1 by using a wireless circuit, and transfers the data of U-Plane via the Internet network 14 by using a wired public line 15. The relay femto base station 4 measures the interference power from an adjoining relay femto base station, and notifies the interference power to the donor macro base station 1. Based on the measurement of interference power notified to the donor macro base station 1, the wireless packet scheduling is arbitrated to avoid interference between the relay femto base stations.
摘要翻译：要解决的问题：为了获得具有施主宏基站的小资源的中继毫微微基站的高吞吐量，并且避免毫微微小区基站的干扰。解决方案：中继毫微微基站4通过使用无线电路经由供体宏基站1传送在核心网络7和移动站6之间交换的C平面的数据，并传送U平面的数据通过使用有线公用线路15的互联网14，中继毫微微基站4测量来自相邻的中继毫微微基站的干扰功率，并向施主宏基站1通知干扰电力。基于干扰测量通知给供体宏基站1的功率，仲裁无线分组调度以避免中继毫微基站之间的干扰。版权所有（C）2012，JPO＆INPIT

35. 发明专利

JP2007267304A Synchronization method of radio communication system, and terminal device 有权
标题翻译：无线电通信系统和终端设备的同步方法
公开(公告)号：JP2007267304A
公开(公告)日：2007-10-11
申请号：JP2006092819
申请日：2006-03-30
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ISHII HIROTAKE , HANAOKA MASAYUKI
IPC分类号： H04B7/26 , H04B1/3822 , H04B1/40 , H04Q7/38
摘要： PROBLEM TO BE SOLVED: To accelerate synchronous processing during switching between radio systems, while suppressing the power consumption and circuit scale. SOLUTION: A radio system device comprises a GPS receiver 30 in a base station facility, including a plurality of base station devices of different radio systems. Each of the plurality of base station devices of the different radio systems, provided in the base station facility, comprises a means for transmitting a radio signal synchronized with a reference signal output from the GPS receiver and a mobile station device comprises a transmitter/receiver for transmitting/receiving signals, while switching the plurality of different radio systems. There is provided a means for staring the synchronous processing with the final value of a control signal in the synchronous processing of a switching source as the initial value of a control signal, in the synchronous processing of a switching destination when transmitting/receiving signals, while moving and switching the radio systems. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：在抑制电力消耗和电路规模的同时，加快无线电系统之间切换时的同步处理。解决方案：无线电系统设备包括基站设施中的GPS接收机30，包括不同无线电系统的多个基站设备。在基站设施中提供的不同无线电系统的多个基站装置中的每一个包括用于发送与从GPS接收机输出的参考信号同步的无线电信号的装置，并且移动站装置包括用于在切换多个不同的无线电系统的同时发送/接收信号。在发送/接收信号时，在切换目的地的同步处理中，提供了在开关源的同步处理中将控制信号的最终值作为控制信号的初始值来设置的装置，同时移动和切换无线电系统。版权所有（C）2008，JPO＆INPIT

36. 发明专利

JP2006246093A Software wireless device and library configurations 有权
标题翻译：软件无线设备和图书馆配置
公开(公告)号：JP2006246093A
公开(公告)日：2006-09-14
申请号：JP2005059857
申请日：2005-03-04
申请人： Hitachi Communication Technologies Ltd , Hitachi Ltd , 株式会社日立コミュニケーションテクノロジー , 株式会社日立製作所
发明人： ISHIKAWA TAKASHI , KAWABE MANABU , TSUNEHARA KATSUHIKO , ISHII HIROTAKE
IPC分类号： H04B1/40 , H04B7/26
CPC分类号： H04B1/0003 , H04B1/40
摘要： PROBLEM TO BE SOLVED: To prevent a wireless device from enlarging in the whole size so as to raise the general versatility, while securing the flexibility of the library and the general versatility even under the distributed control, in a software wireless device configured by software library. SOLUTION: Each signal-processing library 801 comprises the control signal of the same format. A signal-processing library core 802 which performs essential functional processing of each library possesses the configuration without depending on signal-processing libraries connected forward and backward. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了防止无线设备放大整体，以提高通用性，即使在分布式控制下也能确保图书馆的灵活性和通用性，在配置的软件无线设备中由软件库。解决方案：每个信号处理库801包括相同格式的控制信号。执行每个库的基本功能处理的信号处理库核802具有该配置，而不依赖于正向和反向连接的信号处理库。版权所有（C）2006，JPO＆NCIPI

37. 发明专利

JP2006060721A Software radio receiver 有权
标题翻译：软件无线接收器
公开(公告)号：JP2006060721A
公开(公告)日：2006-03-02
申请号：JP2004243090
申请日：2004-08-24
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ISHII HIROTAKE , TSUNEHARA KATSUHIKO , YANO TAKASHI
IPC分类号： H04B1/40
CPC分类号： H04L27/0008 , H04L7/04
摘要： PROBLEM TO BE SOLVED: To make an analog filter for antialiasing in common without using a rate conversion by a complex operation in a sampling device.
SOLUTION: The software radio receiver makes sampling by setting a sampling frequency to be integral multiple of signal bands and to double a cut-off frequency or more, using: an anti-aliasing filter which has a fixed cut-off frequency fc; an AD converter and a DA converter which have a clock signal input and change the sampling frequency; and a PLL circuit which changes a clock signal frequency.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：在采样装置中通过复杂操作使用速率转换来制造用于抗锯齿的模拟滤波器。
解决方案：软件无线电接收机通过将采样频率设置为信号频带的整数倍，并将截止频率或更高频率加倍来进行采样，使用：具有固定截止频率fc的抗混叠滤波器 ; 具有时钟信号输入和改变采样频率的AD转换器和DA转换器; 以及改变时钟信号频率的PLL电路。版权所有（C）2006，JPO＆NCIPI

38. 发明专利

JP2002009670A SYNCHRONIZATION CAPTURE CIRCUIT 失效
公开(公告)号：JP2002009670A
公开(公告)日：2002-01-11
申请号：JP2000194883
申请日：2000-06-23
申请人： HITACHI LTD
发明人： ISHII HIROTAKE , YANO TAKASHI
IPC分类号： H04B1/707 , H04B1/7083 , H04L7/00
摘要： PROBLEM TO BE SOLVED: To solve the problem of the conventional synchronization capture circuits, that have to carry out initial cell search in a state where a spread code frequency deviation takes place between a base station and a mobile station, because of poor frequency accuracy at application of power in the case of employing an inexpensive crystal oscillator, resulting in causing a serious problem onto an inter-base station asynchronous cellular system which would require long cell search time or a system at high-speed chip rate. SOLUTION: The synchronization capture circuit in a CDMA inter-base station asynchronous cellular system performing cell searching called a three- stage search adopts the 1st stage cell search, where using slot timing detection information eliminates spread code frequency deviation, the 2nd stage search where a code group is discriminated and frame timing is detected, and the 3rd stage search where scrambling code identification is performed.

39. 发明专利

JPH10285079A SPREAD SPECTRUM RECEIVER 失效
公开(公告)号：JPH10285079A
公开(公告)日：1998-10-23
申请号：JP9184097
申请日：1997-04-10
申请人： HITACHI LTD
发明人： ARIYOSHI MASAYUKI , YANO TAKASHI , AKERA TAKAMOTO , DOI NOBUKAZU , ISHII HIROTAKE
IPC分类号： H04L27/22 , H04B1/707 , H04B1/7093
摘要： PROBLEM TO BE SOLVED: To decrease the number of working gates and to reduce the power consumption by reading a received signal in every (n) clocks via each register at an input signal series register part. SOLUTION: An input signal sequence register 101 is divided into sub-register blocks 111 for each tap. Every block 111 consists of k (4) pieces of registers 112 and a selector 114 which selects a register 112 and sends it to a tap. The registers R0 to R255 read the contents of the received signals Rx in response to the latch timing signals WR0 to WR255 which are decided for every register. Receiving the input of a signal WRi, the registers Ri (i=0 to 255) read the signals Rx (t) and are kept as they are until the input of the next signal WRi is received. Thereby, the contents of every register are rewritten only in every n (=256) clocks and accordingly the power consumption at the input signal sequence register part is reduced down to 1/256 at the part of the register 101 in comparison with a conventional system using a shift register.

40. 发明专利

JPH0993217A SPREAD SPECTRUM COMMUNICATION METHOD AND COMMUNICATION EQUIPMENT 失效
公开(公告)号：JPH0993217A
公开(公告)日：1997-04-04
申请号：JP24210895
申请日：1995-09-20
申请人： HITACHI LTD
发明人： ISHII HIROTAKE , DOI NOBUKAZU , YANO TAKASHI
IPC分类号： H04L27/18 , H04B1/707 , H04J13/00
摘要： PROBLEM TO BE SOLVED: To obtain a correct signal not affected by a frequency deviation by accumulating at an accumulator although an error takes place when the frequency deviation is in existence in a local oscillator between a transmitter and a receiver and an output signal of the accumulator is subjected to a delay detection. SOLUTION: When a frequency deviation is in existence in a local oscillator between a transmitter and a receiver, since a sine wave whose frequency is Δf is multiplied with an input signal to multiplier circuits 31, 32, a received wave is inverted after 1/2Δf[S] period. Thus, a signal BQ' being the output of an accumulator 35 has a waveform as shown in figure B. When the signal BQ' is subjected to delay detection, an error is produced as shown in figure C in a signal DQ after detection. In this case, the signal DQ is accumulated by an accumulator 46 as shown in figure, the effect of the error is eliminated as shown in figure E in the output of a comparator 48. Thus, even when a frequency deviation is in existence in a local oscillator between a transmitter and a receiver, the deterioration in a code error rate is avoided and an information signal at a low speed is sent.

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